Process of producing copper alloys.



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HENRY BRYDA. 0F BLACKSTONE, MASSACHUSETTS.

PROCESS OF PRODUCING OFFER AIJLOYS.

N0 Drawing.

of Massachusetti. have invented certain new' and useful.Improvements inProcesses of Producing Copper Alloys: and I do declare the l llowinf: tohe a full. clear, and exact description of the invention, such as willenalilc others skilled in the art to which it appertaius to make auiluse the same.

The present invention relates to a method of producingja copper alloy,which for certain purposes may he used as a substitute (or gold.

The ollject of the invention is to provide a liroccss wherehy aninexpensive substitute for grold eanhe produced, which material will notchange color or corrode or tarnish when exposed to ordinary atmosphericinfluent-es which will not rust, which retains lu'illiancy for a long"period of'time without frequently polishing. and which ma he used forthe production of jewelry or as a lmse metal for making tahle knives,forks, spoons and the like.

in carrying out my process l preferably proceed as follows: 16 ounces ofcopper are melted, and while molten a suitable quantity ol tin or zine,preferably about 11. ounces, added thereto, and the mixture agitateduntil the copper thoroughly allos with the tin or zinc, after which 1.ounces of quick lime are added and the material constantly agitated for3 minutes or more, thereafter 1 ounce of' tartar of commerce (crudcpotassium acid tartrate) is added and the mixture agitated tor 2 minutesor more, after this 1 ounce of magnesia (magnesium oxid) is atldcd. andthe mixture again agitated for :3 or ii'ninutes, after this ounce of salannnoniae (ammonium chlorid) is added, and' the entire mixture isagitated steadily for to of an hour, more or less.

While in the @pove example I have stated I the proportions in the formof ounces. it is obvious" that, pounds ortons or any other suitable unitof weight may be employed, and the proportions above stated are givenSpecification of Letters Patent.

Application filed April 14,

Patented Apr. 28, 1914. 191:2. ScrialNo. 761,116.

for the purpose of illustration only, and the invention is .not.confined to these particular more or less, the proportions of copper andtin heme. varied to produce alloys of somewhat difl'erent, hardness,color, and other ingredients varying, according to the degree ofpurlty'of the copper and tin employed.

\Vhen the ingredients have all been thoreovered and allowed to remainuntouched from thirty to forty minutes which will permitce'rtaiuin'ipurities to-sink to the bottom. it is important that when the salammoniac the black smoke which is given ott' from the mixture, sincethis smoke is 1n ur1ous tothe preferably employed in the form of a, finepo wder, and at'ter mixing this with the al-' toy, the color of the masschanges from coppery red to golden yellow. The so coinmingledingredients are then pouredinto a suit" able mold which is composed ofany suitable material such as plaster of Paris, black lead, carbon, ironor any. other mold other than one made from loam or earth.

' I claim as my invention:

which consists in melting copper, and adding successively thereto, whilestirring, tin, quick lime, tartar, magnesia, and sai ammo niac.

2. A process of producing a coppen alloy, which consists in melting 16parts of copper, then adding successively the following substances: 11-parts of tin, 1-1; parts of nesia; and agitating the mixture after eachaddition of material.

which consists in melting copper, then addingto the melted copper asmall quantity of tin, then a g itating the mixture so formed until thecopper and tin are thoroughly combined, then adding'quick lime andagitating the mixture, then adding tartar of commerce and agitating themixture so formed,

properties, and the proportions of the other,

oughly mixed the crucible or melting pot is.

is added that the operator does not inhale health of the operator? Thequick lime is quick lime, 1 part of tartar, 1 part of magproportions,since the proportions may vary 1. Aprocess of producing a copper alloy,

. 3. A process of producing a. copper alloythen adding mvginvsiu mixtureafter said :u

lilition, then adding sal animoniac and agiiglting the mixture for fromthirty to 5 less, then allowing this mixture to stand for forty-fiveminutes more 01 :1 predetermined time and than pouring the mixture soformed int 0 suitable molds;

and agitating thu' In tvslinmny my hand in plrsrllvr of two .subscmosses.

HENRY I \Viinosscs:

Fin x1; \V. 1\'[(:C0vm',

Yinxruu Bin'DA.

ribing \ril- SRYDA.

